CN2305491Y

CN2305491Y - Multipurpose micro gasoline engine

Info

Publication number: CN2305491Y
Application number: CN97207463U
Authority: CN
Inventors: 陈义模
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-01-09
Filing date: 1997-01-09
Publication date: 1999-01-27
Anticipated expiration: 2007-01-09

Abstract

The utility model discloses a multipurpose micro gasoline engine which is composed of a cylinder head, a cylinder body, an air distribution mechanism, a piston connecting rod crank shaft assembly, a crank case, an output structure, a starting ratchet structure, a carburetor, a filter and a muffler. The single-cylinder four-stroke cycle, the good lubrication and the good cooling power of the utility model improve power, and a cam and a crank shaft are in transmission connection by a tooth belt to cause the operation to be stable and reduce noise. The starting performance of dual-purpose ratchet transmission is good, and the muffling effect of a new barrel type muffler is good. The utility model has the advantages that the structure is simple, the weight is light, the utility model can improve the output power and the starting performance, the oil consumption and the noise are decreased, the vibration is small, and the pollution discharge is less. The utility model is suitable for small multipurpose power sources at countryside.

Description

The minitype gasoline motors of using more

The utility model belongs to the minitype gasoline motors of using of single-cylinder four-stroke engine more.

Present small diesel engine, motorcycle engine and two-stroke booster vehicle engine on the market still has that startability is poor, fuel consumption is big, blowdown is heavy, noise is big and the deficiency of fuselage weight.The utility model adopts the single-cylinder four-stroke petrol engine, and with the synchronous toothed belt drive mechanism of the overhead camshaft of novelty, the combination cylinder head, the starting ratchet structure, cartridge type silencing apparatus and blowdown magnetic plug screw, just can make the complete machine composite structure simple, improve power and startability, reduce oil consumption and noise, and have in light weight, vibrations are little, blowdown is few and the characteristic of stable working.

The purpose of the utility model design, be to adopt the single-cylinder four-stroke petrol engine to combine with the synchronous toothed belt drive mechanism of new-type overhead camshaft, combination cylinder head, dual-purpose startup ratchet drive mechanism, cartridge type silencing apparatus and blowdown magnetic plug screw, be designed to the minitype gasoline motors of using more, make it improve power and startability, reduce oil consumption and noise, and have simple in structure, in light weight, vibrations are little, blowdown is few and the advantage of stable working.

Also in conjunction with the accompanying drawings design knot knot of the present utility model is described in detail as follows with embodiment below:

How Fig. 1 always schemes with the structure of minitype gasoline motor;

Fig. 2 is many drive mechanism schematic representation with the minitype gasoline motor.

As shown in Figure 1, 2, how this is made up of cylinder head, distribution device, housing assembly, piston rod crankshaft assembly, crankcase, output transmission structure, startup ratchet drive mechanism, Carburetor, filter cleaner and silencing apparatus with the minitype gasoline motor.It is characterized in that having one to fixedly connected with cam wheel 29 in the outer end by overhead camshaft 28, cam wheel 29 and toothed belt 25 upper ends engagement synchronously, toothed belt 25 lower ends and crankshaft gear 6 engagements, crankshaft gear 6 is fixedlyed connected with bent axle 9 left outer ends and is driven the synchronous toothed belt drive mechanism of distribution that rotation is formed by bent axle; One by in the middle of the ratchet shaft 60 by cup 62, steel ball 61 is fixedlyed connected with ratchet 81 with end cap 64 and with lubricant oil 63 oil sealings, two ends are rotationally connected with right crankcase 55 both sides wall supportings respectively by bearing, two outer ends are connected with the handle sleeve with foot-operated handle respectively and are connected, ratchet 8l ratchet and the engagement of ratchet 59 one-way rotation, ratchet gear 58 and lazy shaftgear 80 engagements, lazy shaftgear 80 and II gear 56 engagements of paying axle 67, II gear 56 is fixedlyed connected with a pair axle 67, pays axle 67 and fixedlys connected with a pair I gear 77; I gear 77 and mainshaft gear 72 engagements, mainshaft gear 72 is fixedlyed connected with main shaft 3, and drives the dual-purpose startup ratchet drive mechanism that bent axle 9 rotates and connecting rod 11 to-and-fro motion are formed by clutch gear 5 and crankshaft gear 74 engagements.Wherein, cylinder head is to be fixedlyed connected with cylinder block 15 upper ends by cylinder head 20 lower ends, the air inlet mouth of pipe in right side is fixedlyed connected with suction tude 39, and be connected with Carburetor 46 by suction tude 39, the left side exhaust pipe mouth connects with silencing apparatus 53 by gas of combustion outlet pipe 68 to be pressed, 19 lower ends, hemispherical combustion chamber communicate with cylinder liner 14 upper ends, upper right inlet hole is fixedlyed connected with valve seat 38, valve seat 38 cooperates with intake valve 22 air inlets, intake valve 22 upper shaft are connected with conduit 24 sliding sleeves, and compress by locker 35 and the interior outer spring 37 of internal and external spring seat 36 usefulness, valve axostylus axostyle upper end is connected by rocking arm 31 and camshaft 28 distributions, upper left gas of combustion exhaust port is connected with exhaust valve, exhaust valve is connected by rocking arm 31 and camshaft 28 distributions, and left side spark plug screw 21 is connected with spark plug, and spark plug is connected with magnetogenerator 73 power supplies of outer end, bent axle 9 left side by lead, the middle part is used to cool off cylinder head by air port 23, and the upper end is connected and forms with cylinder head 33 lower ends.Distribution device is to be rotationally connected by bearing 27 and cylinder head 20 and cylinder cap 33 by camshaft 28, and it is lubricated with oil sealing 26, cam contacts with rocking arm 31; end in contact and control intake valve on the axostylus axostyle of rocking arm right-hand member and intake valve 22; rocking arm 31 is rotationally connected with pitman arm shaft 32; and is connected with 34 supportings of rocking arm carriage by pitman arm shaft 32; camshaft 28 left ends are fixedlyed connected with cam wheel 29; cam wheel 29 and toothed belt 25 upper ends engagement synchronously, and toothed belt 25 lower ends and crankshaft gear 6 mesh and by bent axle 9 drive rotations and form.Housing assembly is to be connected with aluminium alloy cylinder sleeve 14 linings by inclination cast-iron cylinder block 15 endoporus, open lubricating oil path hole 12 in the wall, the upper end is connected with cylinder head 20 lower ends, the lower end is connected with left crankcase 7 upper ends, cylinder sleeve 14 internal surface honings become the reticulate pattern shape lubricated to improve, the upper end communicates with firing chamber 19, and endoporus and piston 13 are slidingly connected, and the lower end communicates with left crankcase 7.The piston rod crankshaft assembly is by piston 13 upper ends and oil piston ring 16, piston one ring 17 and two rings 18 covers are solidly connected, cylindrical and cylinder sleeve 14 are slidingly connected, the underpart is rotationally connected by pivot pin and connecting rod 11 upper ends, a song axle of connecting rod 11 lower ends and bent axle 9 is rotationally connected, be rotationally connected by bearing and left crankcase 7 side wall supports by the axle 9 cranks outside, fixedly connected with crankshaft gear 6 outside the left side lid 2, and by toothed belt 25, cam wheel 29 drives camshaft 28 and rotates, fixedly connected with flywheel 10 in outer end, a left side, flywheel 10 limits circle is fixedlyed connected with magnet 8, and form magnetogenerator with alignment chart and power to spark plug, the right lid is outer fixedlys connected with driving gear 74, fixedlys connected with oil pump driving gear 75 and form in right outer end.The left and right limit of left and right sides crankcase (7,55) wall by bearing 65 respectively with bent axle 9, main shaft 3, pay axle 67, lazy axle 70 and ratchet shaft 60 is rotationally connected and with lubricant oil 66 oil sealings, left and right limit wall is bolted to connection with left and right limit lid (2,57) respectively, upper left stomidium is fixedlyed connected with cylinder block 15, upper right air outlet hole screws with ventilation mouth 54 and is connected, bottom blowdown hole, lower-left screws to be connected with magnetic plug screw 1 can reduce blowdown flow rate, the outer left and right sides journal stirrup of going to the bottom is connected with tubular support by pivot pin, and is connected with runner by bearing and forms.The output driving mechanism is by crankshaft gear 74 and clutch gear 5 engagements, clutch gear 5 is connected with main shaft 3 sky covers and rotated by release lever 79 connection clutch gears 5 drive main shafts 3 by multi-disc wet clutch 76 controls, main shaft 3 is fixedlyed connected with driving gear 72, driving gear 72 is with I driving gear 77 engagements of paying axle 67 and drive and pay axle 67 and rotate, and pays axle 67 and forms by left outer end drive wheel output engine power.Carburetor is that the mixed gas outlet pipe by pillar Carburetor 46 is connected with suction tude 39, and is connected with the air inlet pipeline of cylinder head 20 by suction tude 39, and the steam outlet pipe of air inlet pipe and filter cleaner 44 is connected, and encloses 47 with bundle and tighten and form.Filter cleaner is to be connected with housing 45 sleeves and to be enclosed 48 with bundle by jacket 43 to tighten, papery filtering assembly 44 is connected with housing 45 upper right side mouth of pipe sleeves, housing 45 air outlet slit pipes are connected with Carburetor 46 air inlet pipes, and case cover 43 upper air inlet ducts communicate with atmosphere and form.Silencing apparatus is to pass vibration isolation plate 83 by gas of combustion outlet pipe 68 outer pipes to fixedly connected with vibration cylinder 82 top boards, outlet end is fixedlyed connected with tubular vibration plate 84, the cotton plate 50 of glass is connected with vibration cylinder 82 suits with outlet pipe 68 respectively, vibration cylinder 82 is connected with urceolus 69 sleeves, end is connected with vibration plate 71, tubular vibration plate 84 be connected with vibration cylinder 82 sleeves and and vibration cylinder 82 usefulness bolts and urceolus 69 be fastenedly connected, and vibration plate (71,78) silencing apparatus is separated into three expansion chambers (49,51,52), one-level tube core 85 passes vibration plate (71,78), on, the lower end is connected with an expansion chamber 49 and three expansion chambers 52 respectively, secondary tube core 86 passes vibration plate 78, on, the lower end is connected with two expansion chambers 51 and three expansion chambers 52 respectively, noise elimination outlet pipe 53 passes urceolus 69 and fixedlys connected with urceolus, air intake communicates with two expansion chambers 51, and the air outlet communicates with atmosphere and forms.

In a word, the minitype gasoline motors of using that manufacture and design according to the utility model embodiment more, just enough single-cylinder four-stroke circulations of energy and good lubrication and the cooling of ventilating improve power, reach stable working and reduce noise be in transmission connection camshaft and bent axle of synchronous toothed belt, can reduce the crankcase blowdown flow rate with the blowdown of magnetic plug screw, startability can be improved with the ratchet structure startup, and the noise elimination effect can be improved with new-type cartridge type silencing apparatus.The utility model is simple in structure, can improve output power and startability, reduce oil consumption and noise, and have in light weight, vibrations are little, blowdown is few and the advantage of stable working, be fit to do the rural area harvesting, water, beat the minitype motivation source of rice, pulverizing and the illumination of generating electricity, and usefulness such as equipped booster car and recreational vehicle.

Claims

1. use the minitype gasoline motor one kind more, it is by cylinder head, distribution device, housing assembly, the piston rod crankshaft assembly, crankcase, output transmission structure, start the ratchet drive mechanism, Carburetor, filter cleaner and silencing apparatus are formed, it is characterized in that having one to fixedly connected with cam wheel (29) by the left outer end of overhead camshaft (28), cam wheel (29) and toothed belt (25) upper end engagement synchronously, toothed belt (25) lower end and crankshaft gear (6) engagement, crankshaft gear (6) is fixedlyed connected with the left outer end of bent axle (9) and is driven the synchronous toothed belt drive mechanism of distribution that rotation is formed by bent axle; One by passing through cup (62) in the middle of the ratchet shaft (60), steel ball (61) is fixedlyed connected with ratchet (81) with end cap (64) and with lubricant oil (63) oil sealing, two ends are rotationally connected with the supporting of right crankcase (55) both sides wall respectively by bearing, two outer ends are connected with the handle sleeve with foot-operated handle respectively and are connected, ratchet (81) ratchet and the engagement of ratchet (59) one-way rotation, ratchet gear (58) and lazy shaftgear (80) engagement, lazy shaftgear (80) and II gear 56 engagements of paying axle (67), II gear (56) is fixedlyed connected with a pair axle (67), paying axle (67) fixedlys connected with a pair axle I gear (77), I gear (77) and mainshaft gear (72) engagement, mainshaft gear (72) is fixedlyed connected with main shaft (3), and drives the startup ratchet drive mechanism that bent axle (9) rotates and connecting rod (11) to-and-fro motion is formed by clutch gear (5) and crankshaft gear (74) engagement.

2. as claimed in claim 1 many with miniature vapour curly hair motivation, the bottom blowdown hole, lower-left that it is characterized in that left and right sides crankcase (7,55) screws with magnetic plug screw (1) and is connected, and can reduce blowdown flow rate.

3. the minitype gasoline motor of using as claimed in claim 1 more, it is characterized in that silencing apparatus is to wear ground vibration isolation plate (83) by gas of combustion outlet pipe (68) outer pipe to fixedly connected with vibration cylinder (82) top board, outlet end and the tubular utmost point (84) that shakes is fixedlyed connected, the cotton plate of glass (50) is connected with vibration cylinder (82) suit with outlet pipe (68) respectively, vibration cylinder (82) is connected with urceolus (69) sleeve, end is connected with vibration plate (71), tubular vibration plate (84) is connected with vibration cylinder (82) sleeve also and vibration cylinder (82) is fastenedly connected with bolt and urceolus (69), and vibration plate (71,78) silencing apparatus is separated into three expansion chambers, one-level tube core (85) passes vibration plate (71,78), on, the lower end is connected with an expansion chamber (49) and three expansion chambers (52) respectively, secondary tube core (86) passes vibration plate (78), on, the lower end is connected with two expansion chambers (51) and three expansion chambers (52) respectively, noise elimination outlet pipe (53) passes urceolus (69) and fixedlys connected with urceolus, air intake communicates with two expansion chambers (51), and the air outlet face that communicates with atmosphere is formed.